private bool HandleMouseMove(int pxX, int pxY, Toolbox.ToolType tool)
{
if (m_sprite == null || pxX < 0 || pxY < 0)
{
return(false);
}
// Convert screen pixel (x,y) to sprite pixel index (x,y).
int pxSpriteX = pxX / BigBitmapPixelSize;
int pxSpriteY = pxY / BigBitmapPixelSize;
// Ignore if pixel is outside bounds of current sprite.
if (pxSpriteX >= m_sprite.PixelWidth || pxSpriteY >= m_sprite.PixelHeight)
{
return(false);
}
if (tool == Toolbox.ToolType.FloodFill)
{
return(m_sprite.FloodFillClick(pxSpriteX, pxSpriteY));
}
// Convert sprite pixel coords (x,y) into tile index (x,y) and tile pixel coords (x,y).
int tileX = pxSpriteX / Tile.TileSize;
int pxTileX = pxSpriteX % Tile.TileSize;
int tileY = pxSpriteY / Tile.TileSize;
int pxTileY = pxSpriteY % Tile.TileSize;
int nTileIndex = (tileY * m_sprite.TileWidth) + tileX;
Palette p = m_parent.ActivePalette();
if (tool == Toolbox.ToolType.Eyedropper)
{
int nCurrColor = m_sprite.GetPixel(pxSpriteX, pxSpriteY);
if (nCurrColor == p.CurrentColor())
{
return(false);
}
p.SetCurrentColor(nCurrColor);
return(true);
}
Tile t = m_sprite.GetTile(nTileIndex);
int nColor = (tool == Toolbox.ToolType.Eraser ? 0 : p.CurrentColor());
// Same color - no need to update.
if (t.GetPixel(pxTileX, pxTileY) == nColor)
{
return(false);
}
// Set the new color.
t.SetPixel(pxTileX, pxTileY, nColor);
return(true);
}